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Thread: Running pool pump.. An hour per 10 degrees?

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    Running pool pump.. An hour per 10 degrees?

    I've had my pool redone and up and running for about 2 months now. I hear all around you should run your pool pump an hour per 10 degrees. My water is just about to hit 80 degrees. (In Phoenix Arizona)
    Now I've only had my pump running about 2 hours a day and I brush the walls and vacuum the bottom about once weekly. So far the water has been very clear, been doing my best to keep chlorine, ph, etc.. levels where they should be and everything seems perfect.
    So my question is what is the real downside to not running your pump enough? Is there something that I'm missing? Just seems running my pump 4 times longer everyday would be a huge waste of energy and money.
    I'm no pool pro so let me know what you guys think

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    Lana537's Avatar
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    Re: Running pool pump.. An hour per 10 degrees?

    Hello~~

    How do you chlorinate your pool?

    Lana
    23,600 gallon, refurbished 1960's inground concrete, Jandy sand filter w Jandy 2 hp variable speed pump, Pool Pilot Digital SWCG+Chemtrol 2100+CO2 tank; PebbleTec White Pearl with 10% Cobalt Blue Dark Beadcrete by Olympic Pool Plastering, Georgia. Taylor K-2006 Test Kit; Aqua Check Salt test; LaMotte borates test, and Jack's Magic Sequest test kit; SparklyPoolitis level: extremely high.

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    Mod Squad Bama Rambler's Avatar
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    Re: Running pool pump.. An hour per 10 degrees?

    We need to know a lot more about your pool and equipment to even hazard a guess, but 2 hours a day in most any type pool is cutting it way short. I don't know that you need 8 hours but I think you're asking for trouble with 2.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    Mod Squad woodyp's Avatar
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    Re: Running pool pump.. An hour per 10 degrees?

    Good rule of thumb is at a minimum to run the pump enough to turn your volume of water over at least once daily. 4 to 5 hours is a good ballpark to start. But the hotter it gets-the more I'd run it.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
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    Re: Running pool pump.. An hour per 10 degrees?

    Quote Originally Posted by Lana537
    Hello~~

    How do you chlorinate your pool?

    Lana
    Powder shock and tabs to maintain level.

    Quote Originally Posted by Bama Rambler
    We need to know a lot more about your pool and equipment to even hazard a guess, but 2 hours a day in most any type pool is cutting it way short. I don't know that you need 8 hours but I think you're asking for trouble with 2.
    What kind of trouble?

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    Richard320's Avatar
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    Re: Running pool pump.. An hour per 10 degrees?

    8 hours seems like a lot, unless you have a variable speed pump that you can run on low speed.

    I am fortunate in that I have a round spillover spa. It was real easy to measure the diameter. I moved the valves around so I was emptying the spa. I timed how long it took to draw it down a foot, then crunched some numbers to get a close approximation of how many gpm I filter. Then it was easy to figure out how long it takes to get a full turnover.

    Another thing to keep in mind with pump runtime is when. If you have peak rates for electricity, then nighttime makes sense. I've also read that filtering at night helps cool the water, which may be a concern where you live. But you also want a little bit of circulation during the day, as the top layer of water will lose more FC to UV light than the bottom, so you want to keep it mixed.

    So, figure out how long it takes to turn the water, and experiment. If it stays clear with 6 hours, try going down to 5 for a week or so. If it starts to lose the sparkle, go up. Every pool has its own personality.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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    Re: Running pool pump.. An hour per 10 degrees?

    What kind of trouble?
    A dirty pool that can quickly grow algae in the areas that don't receive much circulation.

    Like others have said, you can watch your pool and judge for yourself. However, one algae bloom will consume all your savings in electricity in 24 hours so you might end up penny wise and pound foolish.

    Generally, 2 hours is inadequate for most pools. I run mine eight hours and there are some folks here who run 24/7.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    Mod Squad Bama Rambler's Avatar
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    Re: Running pool pump.. An hour per 10 degrees?

    Just to reinforce. 2 hours of run time per day leaves a LOT of the day that the pool sits uncirculated. To me, that's asking for trouble. What I would do is test the water in several places just before the pump starts for a couple of days. That will be when the FC is the lowest of anytime during the day.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Running pool pump.. An hour per 10 degrees?

    Quote Originally Posted by Bama Rambler
    Just to reinforce. 2 hours of run time per day leaves a LOT of the day that the pool sits uncirculated. To me, that's asking for trouble. What I would do is test the water in several places just before the pump starts for a couple of days. That will be when the FC is the lowest of anytime during the day.
    That sounds good I'd like to test before the pumps kick on. What exactly am I looking for? Certain tester you recommend?

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    Mod Squad Bama Rambler's Avatar
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    Re: Running pool pump.. An hour per 10 degrees?

    I always recommend the TF-100 from tftestkits.net. there's a link in my sig. You won't be sorry you got it. Go ahead and get the Speedstir. It's an addon but it makes running the tests much easier.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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